David K. Joyce

Rare Minerals

Unusual and rare minerals that I felt would be better here than in some other category! :)

All prices in Canadian dollars. For payment in US$, deduct 20% or multiply by 0.8.

Click on any of the following thumbnails to view a larger image of the specimen.

Item #21935 Vuagnatite, Mcguinnessite 6.4x5.0x2.1 cm Largest Crystal Size: 1mm $75.00 Ukiah Mendocino County California, USA The top of this plate is largely covered with transluscent, white-colourless vuagnatite crystals (some very sharp!) and green, hemispheres of greenish mcguinnessite. Nice combination!	Item #21920 Colemanite, Todorokite 5.5x5.0x3.9 cm Largest Crystal Size: c-3mm, t-micro $35.00 Twenty Mule Team Canyon Death Valley California, USA What a great locality name! History! Also very nice crystals of this boron-rich mineral, associated with botryoidal/dendritic todorokite in cavities on the side of the specimen!	Item #21931 Merwinite 5.5x3.2x1.4 cm Largest Crystal Size: 1mm $35.00 Crestmore Quarry Riverside County California, USA Whitish crystals of this unusual calc-silicate mineral are embedded in this piece. Unusual.	Item #21926 Zunyite 6.6x4.3x2.8 cm Largest Crystal Size: 1mm $75.00 Big Bertha Mine Quartzite Arizona, USA This fragment of quartz.mica matrix contains many hundreds of colourless to beigey zunyite crystals. The crystals are very well formed and are, generally, combinations of cube and octahedron with the octahedron dominating some times. Rich sample with many sharp crystals.
Item #21932 Cornubite 3.5x2.9x2.2 cm Largest Crystal Size: micro $55.00 Hardshell Mine Santa Cruz County Arizona, USA Lots of tiny, green crystals of this rare copper arsenate in and on the gossanous matrix of this piece.	Item #21959 Raite 3.8x2.8x2.0 cm Largest Crystal Size: micro $65.00 Indian Mountain Kola Peninsula Russia There are many open spaces in this matrix that reveal beautiful crystal sprays of the rare Sodium-manganese-titanium silicate raite. There are supposed to be zorite crystals(?) in the cavities as well but I cannot recognize them. Maybe you can?! Very nice raite!	Item #21937 Carparthite 7.0x6.0x5.1 cm Largest Crystal Size: 6mm $65.00 Picacho Mine San Benito Co. California, USA This specimen has some openings that contain yellowish crystals of this unusual mineral that is composed of just carbon and hydrogen! Some nice crystals here!	Item #21945 Strengite 4.3x2.5x1.6 cm Largest Crystal Size: 0.5mm $40.00 Indian Mountain Cherokee County Alabama, USA Beautiful well formed crystals are present both on the darker oxide matrix and as thicker covering on the other side of the specimen. Not all crystals are undamaged but there are many that are perfect and excellent for photography!
Item #21951 Kleinite 5.8x3.0x3.2 cm Largest Crystal Size: 1.5mm $65.00 McDermit Humboldt County Nevada, USA Much of the front of this specimen is covered with rough but coherent crystals of kleinite. When I fist saw this mineral, I thought perhaps it was a uranium mineral, it is so yellow. No, it is a mercury mineral. Rare!	Item #21952 Cornwallite 8.5x3.1x1.7 cm Largest Crystal Size: n/a $35.00 Majuba Hill Pershing County Nevada, USA There are a number of cavities on this specimen lined with deep green cornwallite. There is a light green phase coating the darker green phase, as well, in the largest opening. I'm not sure if that is also cornwallite. There are two deep blue clinoclase crystals on the light green phase on top of the specimen. Great locality!	Item #21955 Felsobanyaite, Gypsum 3.7x2.8x2.8 cm Largest Crystal Size: n/a $40.00 Chickerell Dorset England OK, it is not pretty! It IS unusual, though! White aggregates of this unusual aluminum sulfate mineral intermixed with elongated growths of gypsum. Was labelled originally as "basaluminite", which is a pseudonym for felsobanyaite. Unusual!	Item #21958 Normandite 4.5x4.0x2.4 cm Largest Crystal Size: 14mm $85.00 Kola Peninsula Russia This specimen shows several sprays of deep red-brown normandite embedded in matrix. I have seen many specimens of astrophyllite labelled normandite but this is not one. I've examined it closely and am convinced that it is normandite. Rich specimen of this rare mineral!
Item #21961 Ussingite 4.7x4.3x3.2 cm Largest Crystal Size: n/a $65.00 Mt. Punkurauj Chibiny Massif, Kola Peninsula Russia A fragment of massive ussingite ranging from light mauve to purple. Rich!	Item #21977 Nesquehonite 6.7x6.1x1.6 cm Largest Crystal Size: n/a $35.00 Ferrieres Tarn France Rounded aggregates of this mineral look to be efflorescing out of a sedimentary matrix. Fluoresces a yellow-green colour!	Item #21979 Arrojadite 8.0x5.9x1.1 cm Largest Crystal Size: 4mm $110.00 Rapid Creek Yukon, Canada A plate of crystals of both quartz and arrojadite. The arrojadite crystals are sharp, well formed crystals that cover 40-50% of the top of this plate with quartz crystals covering the rest. Nice!	Item #21991 Tellurobismuthite 5.6x5.1x3.5 cm Largest Crystal Size: 2mm cleavage $45.00 Fyresdal Norway Lots of bright, lustrous cleavages of this unusual telluride scattered throughout this quartz matrix. Rich!
Item #21992 Brewsterite, Baryte 3.5x3.4x2.2 cm Largest Crystal Size: 2mm $35.00 Strontian Argyllshire Scotland This thick plate has its top covered with white crested baryte crystals which have a generous sprinkling of sharp brewsterite crystals. There is sphalerite or wurtzite embedded in the matrix. From the type locality!	Item #22171 Microlite 0.9x0.7x0.6 cm Largest Crystal Size: as above $65.00 Rutherford, #2 Mine Amelia Virginia, USA A small specimen but a very nice crystal of microlite from an old Virginia location. Sharp faces all around. The crystal was attached on the bottom. Nice example!	Item #22048 Xonolite 6.8x6.0x2.8 cm Largest Crystal Size: 10mm` $45.00 N'Chwaning Mine Kuruman South Africa Here is an interesting accessory mineral from this famous manganese mining field. Pure-white aggregates of silky xonotlite crystals crammed into vein-lets and interstices in this piece. Excellent example of this unusual mineral! r	Item #22167 Clinoptilite-Ca 3.7x3.7x2.3 cm Largest Crystal Size: 2mm $45.00 Succor Creek Oregon, USA This geode-like, quartz nodule is hollow and completely lined with tabular, sharp, gemmy clinoptilite crystals. Excellent!
Item #22168 Levyne 3.4x3.0x1.9 cm Largest Crystal Size: 3mm $45.00 Beech Creek Oregon, USA Sharp, hexagonal-platy crystals of this unusual zeolite are present in a contrasting black vug in basalt. There are crystal sections that are 9mm across but the largest complete crystal is 3 or 4mm across. Beautiful!	Item #22240 Probertite 7.5x3.8x2.0 cm Largest Crystal Size: as above $35.00 Boron California, USA A mass of compact, curbed, elongated and acicular probertite crystals from the famous borax deposit at Boron. Unusual!	Item #22242 Inderite 4.9x1.9x1.4 cm Largest Crystal Size: as above $35.00 Boron California, USA A significant crystal of this evaporite mineral from the famous evaporite deposit at boron. Smaller crystals of the same mineral attached.	Item #22258 Dumortierite 7.7x5.7x3.5 cm Largest Crystal Size: 70mm $65.00 Dehessa California, USA An above average specimen of dumortierite, an aluminum boro-silicate that usually has a purple colour. This specimen also shows above average crystallization with the dumortierite forming compact divergent crystal aggregates. Nice example!